Coal breaking, sizing and stone separating apparatus



Aug. 15, 1961 R. STAFFORD ETAL 2,996,259

COAL BREAKING, SIZING AND STONE SEPARATING APPARATUS Filed Sept. 24, 1959 U H M00 N wvz e mm 0 m m W 2,996,259 (iOAL BREAKING, SIZING STONE 'SEPARATING APPARATUS Russell Stafford, 'McCarr, Ky., and Kermit Damron, Matewan, W. Va.; Juanita "Damron, administratrix of saidKermit Damion, deceased Filed Sept. '24, .1959, Ser. No..841,965 6. C;laims. (.Cl. 241-86) This invention relates to a coal sizer and breaker, and it particularly relates to a device of this type which .sizes the coal .wh-ile separating the coal from rock without breaking the rock.

\Various different types of apparatus (have heretofore been used for breaking. and sizing coal, however, these prior devices were either too complex and expensive to manufacture and operate .or not adequate to do the required job ,efiicientl y.

It ,is one object ofthe present invention to overcome the above difficulties of prior type devices by providing an apparatus whichis relatively simple in construction and easy to operate ,and maintain while yet being very effective to not only size and break'the coal but also separate it-frornthe rock without breaking the rock.

Another object of the'present invention is to provide a coalbreaking, sizing --and.stone separating apparatus of the aforesaid-,type-which can be easilymodified to fitany desired specifications astocoal sizes and the like.

Other objects of the present invention are to'provide an improved coal treating apparatus, of the character described,.that is easily andeconomically produced, which is sturdy in construction, and which is highly efficient in operation.

'With the above and related objects in view xthis invention consists in the details of construct-ion-andcombination of parts, as will bemore-fully understoodtrom thefollowing description, when read in conjunction with the-accompanying drawing in which:

:FIG. l is a top plan view of an apparatus embodying the present invention.

:FIG. 2 isa sectional view taken online 2-2 of, 1.

FIG. 3 ,is a fragmentary sectional vview of .a second embodiment of the present invention.

-FIG. 4 is a fragmentary sectional .view of a this-d embodiment ofthe present invention.

Referring .,in greater detail .to the drawing wherein similarreference characters refer tosimilar partsthere isshowndacoal breaking, sizing and stone separating device, generally designated 10, comprising a coal feeding screen 12 of the usual conventional type positionedbetween side walls '14 and:'16.

{The side walls 14 and 16 are eachgprovided .with a bearing, as,. at 18 and 20 respectively,, and throught-hese bearings .extends a shaft 22, of .steel.or the like. The ,shaft extends transversely above theuscreen 12 Eand that ,-en,d of the shaft which extends through and beyond bearing 18 is provided with a pulley'24 held on the shaft by a nut or the like 26. The pulley 24 is adapted to support one portion of an endless drive belt, the opposite portion of which is connected to a drive means such as a belt pulley on a motor shaft (not shown).

The shaft 22 supports a coaxial cylinder or drum 28 between the side walls 14 and 16. The cylinder 28 is mounted on the shaft 22 by means of end plates 30 at each end of the cylinder, the shaft 22 passing through these end plates.

Secured on the external periphery of cylinder 28 are a plurality of evenly-spaced steel bars 32, here shown as four in number. The bars 32 extend longitudinally of the cylinder 28 and are of the same length. They are attached to the cylinder 28 in any manner desired but are here illustrated as being welded thereto, as at 34.

of the cylinder. ficient to break the relativelysofitercoal while the harder .-rock is unaffected thereby. The spaces between the chain Pate te Aug- .5 961 Each bar 32 is provided with a series of chain lengths 36 these chain .lengths being equidistantly spaced from each other longitudinally of the respective bars 32. The chain lengths 36 on each bar 32 are offset relative to the chain lengths 36 on the adjacent bars 32 so that alternate bars 32 .are provided with offset chain lengths. In this manner, if the chain lengths 36 on each bar are spaced, for example, six inches apart, the lateral distance between chain lengths on alternate bars is three inches.

The chain lengths 36 may be connected to the bars 32 'in various manners. As shown in FIG. 2, the first link 37, the chain lengths 36 are welded to their respective bars, as at 38. However, the chain lengths may also be conne cted to the bars as in the manner shown in FIG. '3 wherein the cylinder, here designated 50, is provided with bars 52 having longitudinal grooves 54 at the center thereof. At opposite sides thereof, the bars 52 are provided with a series of spaced holes. These holes are aligned on each side of the bar and extend through to the groove 54. By means of this construction, the end link'56 of each chain length is inserted into the groove .54 and releasably retained therein by means of heavy pin'58, and a washer 60 held in place by a transverse'pin '61 through an aperture 63 in the end of heavy pin 58, the pins 58 extending through matingholes in the sides of the bar 52.

In another form of the invention, as shown in FIG. 4,

(the cylinder, here designated 70, is provided with bars "72 similar to bars 32. However, instead of being Welded onto their respective bars 72, the endmost link 74 of the chain lengths are cut away at one end to formaclamplike open end, as at76. These open ends are then slipped over thebar 72 and welded into position. I

In the operation of the above-described apparatusthe shaft 22 is rotated to rotate the cylinder .28 above the screen :12. Coal and rock mixtures moving over the screen are then subject to the breaking action of the chain lengths as they are whipped about by the rotation The force of the chain-lengths issuflengths .and their offset positions relative to the chain rlengths on the other'bars will determine -the size of the resultant coal. The-broken-up coal will; then-fall through the screen 12while the larger rock ,will pass-alongthe screen to aplace of removal.

:The machine and its parts can be made to. the desired size and specifications to suit the particular user.

variously embodied, and the scope of the invention isto be determined as claimed.

:Having-thusset forth and :disclosedthe'nature of this .inyention, what is claimed is:

11- A goa b eak n s z and ton nera n s aa ata c mm-b e q -tsee s assr sat me it-mea ber mounted on a support, said rotary member being positioned above said screen, means to rotate said rotary member, a plurality of equidistantly spaced bars on said rotary member, said bars being on the outer periphery of said rotary member and extending longitudinally thereof, and a series of individual spaced apart chain lengths connected to each of said bars and arranged in linear series thereon, one end link of each chain length having open clamping ends extending about and welded to opposite sides of its respective bar.

2. A coal breaking, sizing and stone separating apparatus comprising supporting side walls, a coal feeding screen between said side walls, a shaft rotatably positioned on said side walls above said screen, means to rotate said shaft, a plurality of bars secured on the outer periphery of said rotary shaft, said bars extending longitudinally of said rotary shaft and being equidistantly spaced from each other around the periphery of said rotary shaft, a series of chain lengths connected to each bar in linear arrangement thereon, said chain lengths being connected at one end to their respective bars and being individually equidistantly spaced from each other longitudinally of their respective bars, each of said chain lengths being provided with an end link having open clamping ends, each said clamping end being in engagement with the respective bar and secured thereto.

3. A coal breaking, sizing and stone separating apparatus comprising supporting side walls, a coal feeding screen between said side walls, a shaft rotatably positioned transversely between said side walls above said coal feeding screen and extending substantially the full width thereof, means to rotate said shaft, a plurality of bars, welding means extending in spaced apart lines along opposed portions of each of said bars securing each of said bars equidistantly spaced from each other on the outer periphery of said rotary shaft longitudinally thereof, a series of chain lengths, and means fixedly connect- 7 1 ing an end chain link thereof to each bar in linear arrangement thereon outwardly of said lines of bar securing welding means, said chain lengths being individually equidistantly spaced from each other longitudinally of their respective bars, the chain lengths on each bar being 2 said bars equidistantly'spaced from each other on theouter periphery of said rotary shaft longitudinally thereof, a series of chain lengths, and means fixedly connecting an end chain link thereof to each bar in linear arrangement thereon outwardly of said lines of bar securing welding means, said chain lengths being individually equidistantly spaced from each other longitudinally of their respective bars, the chain lengths on each bar being offset from the chain lengths on the adjacent bars, said end link connecting means comprising weld means between each said end chain link and its respective bar.

5. A coal breaking, sizing and stone separating apparatus comprising supporting side walls, a coal feeding screen between said side walls, a shaft rotatably positioned transversely between said side walls above said coal feeding screen and extending substantially the full width thereof, means to rotate said shaft, a plurality of bars, Welding means extending in spaced apart lines along opposed portions of each of said bars securing each of said bars equidistantly spaced from each other on the outer periphery of said rotary shaft longitudinally thereof, a series of chain lengths, and means fixedly connecting an end chain link thereof to each bar in linear arrangement thereon outwardly of said lines of bar securing welding means, said chain lengths being individually equidistantly spaced from each other longitudinally of their respective bars, the chain lengths on each bar being offset from the chain lengths on the adjacent bars, said end link connecting means comprising weld means between each said end chain link and an outer surface of said bar substantially intermediate said opposed lines of bar securing welding means.

6. A coal breaking, sizing and stone separating apparatus comprising supporting side walls, a coal feeding screen between said side walls, a shaft rotatably positioned transversely between said side walls above said coal feeding screen and extending substantially the full width thereof, means to rotate said shaft, a plurality of bars, welding means extending in spaced apart lines along opposed portions of each of said bars securing each of said bars equidistantly spaced from each other on the outer periphery of said rotary shaft longitudinally thereof, a series of chain lengths, and means fixedly connecting an end chain link thereof to each bar in linear arrangement thereon outwardly of said lines of bar securing welding means, said chain lengths being individually equidistantly spaced from each other longitudinally of their respective bars, the chain lengths on each bar being offset from the chain lengths on the adjacent bars, said bars each having a longitudinal groove in its outer side portion and aligned mating-holes extending to said longitudinal groove from said opposed side portions of each bar, said end chain link and bar connecting means comprising a heavy pin extending through said aligned mating holes and through the end chain link inserted into said longitudinal groove.

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